Systems and methods for real-time protective device evaluation in an electrical power distribution system

Abstract

A system for providing real-time modeling of protective device in an electrical system under management is disclosed. The system includes a data acquisition component, a virtual system modeling engine, and an analytics engine. The data acquisition component is communicatively connected to a sensor configured to provide real-time measurements of data output from protective devices within the system under management. The virtual system modeling engine is configured to update a virtual mode of the system based on the status of the protective devices and to generate predicted data for the system using the updated virtual model. The analytics engine is communicatively connected to the data acquisition system and the virtual system modeling engine and is configured to monitor and analyze a difference between the real-time data output and the predicted data output. The analytics engine is also configured to determine the bracing capabilities for the protective devices.

Description

APPLICATIONS FOR CLAIM OF PRIORITY[0001]This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Application Ser. No. 60 / 782,329 filed Mar. 10, 2006, and U.S. Provisional Patent Application Ser. No. 60 / 806,215 filed Jun. 29, 2006. This application also claims priority as a Continuation-In-Part under 35 U.S.C. §120 to U.S. patent application Ser. No. 11 / 674,994, filed Feb. 14, 2007 and entitled “Systems and Methods for Real-Time System Monitoring and Predictive Analysis,” which in turn claims priority to U.S. Provisional Patent Application Ser. No. 60 / 733,560 filed Feb. 14, 2005. The disclosures of the above-identified applications are incorporated herein by reference as if set forth in full.BACKGROUND[0002]I. Field of the Invention[0003]The present invention relates generally to computer modeling and management of systems and, more particularly, to computer simulation techniques with real-time system monitoring and prediction of electrical system performance.[...

AI Technical Summary

Problems solved by technology

Such simulation techniques have resulted in reduced development costs and superior operation.

Design and production processes have benefited greatly from such computer simulation techniques, and such techniques are relatively well developed, but such techniques have not been applied in real-time, e.g., for real-time operational monitoring and management.

In addition, predictive failure analysis techniques do not generally use real-time data that reflect actual system operation.

It will be understood that such systems are highly complex, a complexity made even greater as a result of the required redundancy.

Once the facility is constructed, however, the design is typically only referred to when there is a failure.

In other words, once there is failure, the system design is used to trace the failure and take corrective action; however, because such design are so complex, and there are many interdependencies, it can be extremely difficult and time consuming to track the failure and all its dependencies and then take corrective action that doesn't result in other system disturbances.

Moreover, changing or upgrading the system can similarly be time consuming and expensive, requiring an expert to model the potential change, e.g., using the design and modeling program.

Unfortunately, system interdependencies can be difficult to simulate, making even minor changes risky.

For example, no reliable means exists for predicting in real-time the withstand capabilities, or bracing of protective devices, e.g., low voltage, medium voltage and high voltage circuit breakers, fuses, and switches, and the health of an electrical power system that takes into consideration a virtual model that “ages” with the actual facility.

Without real-time synchronization and an aging ability, predictions become of little value as they are no longer reflective of the actual facility status and may lead to false conclusions.

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